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In PQ News
Call of the Month for December 2025 A power quality (PQ) Knowledge funder inquired about electromagnetic compatibility (EMC) issues associated with an advanced research facility. They reported a rich PQ environment and multiple moving parts, including grounding, electromagnetic interference (EMI), and voltage stability, all playing a role. Added to that was the complexity of the research equipment involved, which included photonics and cryogenics.
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EPRI Industrial PQ Training Videos
As a follow-up to our Industrial Power Quality training classes, we have posted these complementary training videos to help solidify the concepts for both utility members and their customers. The top three are listed here.
Visualizing PQ Drive Parameters for Improved Voltage Sag Ride-Through 
This video demonstrates the voltage sag susceptibility of AC drive systems and how to improve the drive’s robustness through parameter changes.
Understanding PLC Voltage Sag Ride-through: AC and DC Powered Systems
This video demonstrates the differences in voltage sag ride-through between an AC powered PLC system and a DC Powered PLC system.
Power Conditioning to Enhance Control System Voltage Sag Ride-Through: The Constant-Voltage Transformer
This video shows how a CVT can be utilized to harden the voltage sag response of an automated control system.